I'm not sure Rosier is much to note. He's a singles guy who will probably just get by on speed until he gets to the upper levels, same with Max Ferguson.
SoxProspects keeps saying that the other shoe is going to drop for Hamilton and that he'll go back to his last year numbers, but he's had a really strong May. Maybe he's turning a corner? Not sure what he can do at the MLB level, but there's lots of use if he can be a bench guy (MIF/OF) with some pop and massive speed.
Denlinger should probably be promoted to AAA soon as that bullpen sucks.